Pump.



B N. WRIGHT..

PUMP.

APPLICATION FILED NOV. 2, 1909.

Patented 001;.4, 1910.

.N, mr 7ml ill I co., WASHINGTON, u. c

UN 1T1) BENJAMIN N. WRIGHT, OF SEATTLE, WASHINGTON.

PUMP.

To all whom it may concern:

Be it known that I, BENJAMIN 1 VIIIGHT, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

My invention relates to certain new and useful improvements in chain pumps particularly adapted for the elevation of water for irrigating purposes, to relieve and clear mines, and for general pumping purposes where it is not required to deliver the water under pressure.

The particular object of my invention is to improve and simplify chain pumps of the type shown in Patent No. 873280 granted December 10, 1907.

lVith these and other objects in view my invention consists in an improved stock construction.

My invention also consists in an improved mechanism for automatically maintaining the proper tension upon the pump chain.

My invention further consists in certain constructions, combinations and arrangements of parts, the preferred form of which will be first described in connection with the accompanying drawings and then the invention particularly pointed out in the appended claims.

Referring to the drawings wherein the same part is designated by the same reference numeral, Figure 1 is a vertical sectional view illustrating a pump constructed in accordance with my patent above referred to and provided with my improvements. Fig. 2 is a detail perspective view of the lower end of the pump and lower chain-carrying wheel, illustrating my automatic chain tension device. Fig. 3 is a detail perspective view of a portion of the chain, showing one of my buckets mounted thereon.

4. designates a rectangular frame to the under side of which is secured. the flange 5 from which depends the portion 6 of the pump stock. 7 is a second frame secured on top of the frame 4t upon the upper side of which are mounted the bearings 8, in which is journaled a shaft 9 carrying at one end the gear 10 meshing with the gear 11 on the shaft 12 also mounted in suitable bearings on the top of the frame 7. 13 is a driviug pulley carried by the shaft 12.

Specification of Letters Patent.

Application filed November 2, 1909.

Patented @0115. d, 1910.

Serial No. 525,945.

From this it will be seen that when power is applied to the pulley 13 the shaft 9 will be driven through gears 10 and 11.

let designates a chain carrying wheel mounted upon the shaft 9.

16 are metallic bands formed into double hoops with a central connecting web, one of the hoops of these bands encircles the stock and in the other hoops are mounted the strips 17 which form a guide for the buckets.

The construction so far described is the construction disclosed in the patent above referred to.

The pump stock is formed of two portions, 6 and 18, the upper portion 6 being of a greater diameter than the lower por tion 18 with its lower end reduced down to the diameter of the part 18. These two parts are connected together by means of a union 19 whereby a pump stock is formed which is composed of two sections, each of which may be of any desired length, the upper section being larger than the lower section. The lower section .18 at its lower end is cut away as shown at 20 and the stock terminates in a flange 21. Extending from the flange 21 is a pair of upwardly extending arms 22 having the outwardly turned end portions 2+ are a. pair of arms which extend downwardly from the side of the portion 18 just above the upper end of the cut-away portion 20. These arms 24; are provided with the outwardly extending flanges 25.

Connecting each of the pair of flanges 23, 25, are a pair of rods 26, 26, having their ends secured in the flanges 23, 25 in any suitable way as by means of the nuts 27. These rods 26 are parallel to each other and mounted between each of the pairs of guide rods is a block 28 provided in its sides with grooves 29 which partially encircle the rods 26 so that the blocks are capable of vertical movement between the guides.

30 is av shaft journaled. in the blocks and carrying thereon a sprocket wheel 31 which has a cut-away portion 32 in one or more sides thereof. The sprocket wheel 31 is in vertical alinement with the wheel 14;, and 33 is an endless chain passing over the wheels 1 1 and 31, said chain being provided with the buckets 34. Preferably the chain 33 is of a type best shown in Fig. 3, the buckets 34 being secured thereon by casting the same around one of the links of this chain before the chain is assembled, with the ends of the links protruding from a bucket on opposite sides thereof whereby the links with the buckets cast thereon may be readily inserted in the length of the chain.

In the operation of my improved construction the chain is formed of such length as to hold the ournal blocks 28 near the upper ends of the guide rods 26 so that as the chain stretches in service the increased length of the chain will be taken up by the downward movement of the journal blocks in the guides, consequently producing in the chain a constant tension which is caused by the weight of the journal blocks and the parts carried thereby. By forming the stock in two sections of different sizes the lower section of which accurately fits around the buckets on the chain and the upper section of which is considerably larger than the buckets, the friction of the buckets in passing through the length of stock is materially decreased, as the lower portion of the stock need only be slightly greater than the distance between two of the buckets though the stock may be of such a length or the buckets placed sufliciently close together so that a greater number of buckets can be in the lower section at the same time. By casting the buckets around a length of chain in the manner disclosed, the removal and insertion of buckets in the chain is facilitated.

I realize that considerable variation is pos sible in the details of construction and arrangement of parts without departing from the spirit of my invention, and I therefore do not intend to limit myself to the specific form shown or described.

\Vhat I claim as new and desire to secure by Letters Patent is:

1. In a chain pump, the combination with a frame, a stock supported from the frame, and a wheel mounted upon the frame, of a wheel support mounted upon the lower end of the stock and including opposed pairs of flanged members, oppositely disposed pairs of guide bolts engaging the flanged members grooved journal blocks movably mounted between said bolts, a chain wheel rotatably supported in said blocks, and a bucket chain passing over said wheels.

2. In a chain pump, a pump stock cut away at its lower end, downwardly and outwardly extending supporting bars at tached to the stock just above said cut away portion and on each side thereof, said bars being laterally flanged at their lower ends, upwardly and outwardly extending supporting bars attached to the stock below said cutaway portion. and having laterally extending flanges at their upper ends oppositely disposed pairs of vertical guide bolts connecting the flanged ends of said bars, journal blocks having grooves in their sides, slidingly mounted between the pairs of guide bolts, and a chain wheel rotatably supported in said blocks.

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN N. II' RIGHT.

\Vitnesses M. E. SHELDON, J. IV. JONES. 

